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📄 overlib.js

📁 数据库设计2.页面的设计与开发3.小结第8章在线考试系统 161 实例分析 161 1. 系统设计2.系统功能预览知识要点 167 制作步骤 168 1 ... 利用简单的HTML代码与脚本 融合而成
💻 JS
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// LAYER GENERATION FUNCTIONS
////////////////////////////////////////////////////////////////////////////////////

// Makes simple table without caption
function ol_content_simple(text) {
	if (o3_css == CSSCLASS) txt = "<TABLE WIDTH="+o3_width+" BORDER=0 CELLPADDING="+o3_border+" CELLSPACING=0 class=\""+o3_bgclass+"\"><TR><TD><TABLE WIDTH=100% BORDER=0 CELLPADDING=2 CELLSPACING=0 class=\""+o3_fgclass+"\"><TR><TD VALIGN=TOP><FONT class=\""+o3_textfontclass+"\">"+text+"</FONT></TD></TR></TABLE></TD></TR></TABLE>";
	if (o3_css == CSSSTYLE) txt = "<TABLE WIDTH="+o3_width+" BORDER=0 CELLPADDING="+o3_border+" CELLSPACING=0 style=\"background-color: "+o3_bgcolor+"; height: "+o3_height+o3_heightunit+";\"><TR><TD><TABLE WIDTH=100% BORDER=0 CELLPADDING=2 CELLSPACING=0 style=\"color: "+o3_fgcolor+"; background-color: "+o3_fgcolor+"; height: "+o3_height+o3_heightunit+";\"><TR><TD VALIGN=TOP><FONT style=\"font-family: "+o3_textfont+"; color: "+o3_textcolor+"; font-size: "+o3_textsize+o3_textsizeunit+"; text-decoration: "+o3_textdecoration+"; font-weight: "+o3_textweight+"; font-style:"+o3_textstyle+"\">"+text+"</FONT></TD></TR></TABLE></TD></TR></TABLE>";
	if (o3_css == CSSOFF) txt = "<TABLE WIDTH="+o3_width+" BORDER=0 CELLPADDING="+o3_border+" CELLSPACING=0 "+o3_bgcolor+" "+o3_height+"><TR><TD><TABLE WIDTH=100% BORDER=0 CELLPADDING=2 CELLSPACING=0 "+o3_fgcolor+" "+o3_fgbackground+" "+o3_height+"><TR><TD VALIGN=TOP><FONT FACE=\""+o3_textfont+"\" COLOR=\""+o3_textcolor+"\" SIZE=\""+o3_textsize+"\">"+text+"</FONT></TD></TR></TABLE></TD></TR></TABLE>";

	set_background("");
	return txt;
}




// Makes table with caption and optional close link
function ol_content_caption(text, title, close) {
	closing = "";
	closeevent = "onMouseOver";

	if (o3_closeclick == 1) closeevent = "onClick";
	if (o3_capicon != "") o3_capicon = "<IMG SRC=\""+o3_capicon+"\"> ";

	if (close != "") {
		if (o3_css == CSSCLASS) closing = "<TD ALIGN=RIGHT><A HREF=\"/\" "+closeevent+"=\"return cClick();\" class=\""+o3_closefontclass+"\">"+close+"</A></TD>";
		if (o3_css == CSSSTYLE) closing = "<TD ALIGN=RIGHT><A HREF=\"/\" "+closeevent+"=\"return cClick();\" style=\"color: "+o3_closecolor+"; font-family: "+o3_closefont+"; font-size: "+o3_closesize+o3_closesizeunit+"; text-decoration: "+o3_closedecoration+"; font-weight: "+o3_closeweight+"; font-style:"+o3_closestyle+";\">"+close+"</A></TD>";
		if (o3_css == CSSOFF) closing = "<TD ALIGN=RIGHT><A HREF=\"/\" "+closeevent+"=\"return cClick();\"><FONT COLOR=\""+o3_closecolor+"\" FACE=\""+o3_closefont+"\" SIZE=\""+o3_closesize+"\">"+close+"</FONT></A></TD>";
	}

	if (o3_css == CSSCLASS) txt = "<TABLE WIDTH="+o3_width+" BORDER=0 CELLPADDING="+o3_border+" CELLSPACING=0 class=\""+o3_bgclass+"\"><TR><TD><TABLE WIDTH=100% BORDER=0 CELLPADDING=0 CELLSPACING=0><TR><TD><FONT class=\""+o3_captionfontclass+"\">"+o3_capicon+title+"</FONT></TD>"+closing+"</TR></TABLE><TABLE WIDTH=100% BORDER=0 CELLPADDING=2 CELLSPACING=0 class=\""+o3_fgclass+"\"><TR><TD VALIGN=TOP><FONT class=\""+o3_textfontclass+"\">"+text+"</FONT></TD></TR></TABLE></TD></TR></TABLE>";
	if (o3_css == CSSSTYLE) txt = "<TABLE WIDTH="+o3_width+" BORDER=0 CELLPADDING="+o3_border+" CELLSPACING=0 style=\"background-color: "+o3_bgcolor+"; background-image: url("+o3_bgbackground+"); height: "+o3_height+o3_heightunit+";\"><TR><TD><TABLE WIDTH=100% BORDER=0 CELLPADDING=0 CELLSPACING=0><TR><TD><FONT style=\"font-family: "+o3_captionfont+"; color: "+o3_capcolor+"; font-size: "+o3_captionsize+o3_captionsizeunit+"; font-weight: "+o3_captionweight+"; font-style: "+o3_captionstyle+";\">"+o3_capicon+title+"</FONT></TD>"+closing+"</TR></TABLE><TABLE WIDTH=100% BORDER=0 CELLPADDING=2 CELLSPACING=0 style=\"color: "+o3_fgcolor+"; background-color: "+o3_fgcolor+"; height: "+o3_height+o3_heightunit+";\"><TR><TD VALIGN=TOP><FONT style=\"font-family: "+o3_textfont+"; color: "+o3_textcolor+"; font-size: "+o3_textsize+o3_textsizeunit+"; text-decoration: "+o3_textdecoration+"; font-weight: "+o3_textweight+"; font-style:"+o3_textstyle+"\">"+text+"</FONT></TD></TR></TABLE></TD></TR></TABLE>";
	if (o3_css == CSSOFF) txt = "<TABLE WIDTH="+o3_width+" BORDER=0 CELLPADDING="+o3_border+" CELLSPACING=0 "+o3_bgcolor+" "+o3_bgbackground+" "+o3_height+"><TR><TD><TABLE WIDTH=100% BORDER=0 CELLPADDING=0 CELLSPACING=1><TR><td>"+o3_capicon+"</td><TD valign=\"middle\" align=\"center\"><B><FONT COLOR=\""+o3_capcolor+"\" FACE=\""+o3_captionfont+"\" SIZE=\""+o3_captionsize+"\">"+title+"</FONT></B></TD>"+closing+"</TR></TABLE><TABLE WIDTH=100% BORDER=0 CELLPADDING=2 CELLSPACING=0 "+o3_fgcolor+" "+o3_fgbackground+" "+o3_height+"><TR><TD VALIGN=TOP><FONT COLOR=\""+o3_textcolor+"\" FACE=\""+o3_textfont+"\" SIZE=\""+o3_textsize+"\">"+text+"</FONT></TD></TR></TABLE></TD></TR></TABLE>";

	set_background("");
	return txt;
}

// Sets the background picture, padding and lots more. :)
function ol_content_background(text, picture, hasfullhtml) {
	if (hasfullhtml) {
		txt = text;
	} else {
		if (o3_css == CSSCLASS) txt = "<TABLE WIDTH="+o3_width+o3_widthunit+" BORDER=0 CELLPADDING=0 CELLSPACING=0 HEIGHT="+o3_height+o3_heightunit+"><TR><TD COLSPAN=3 HEIGHT="+o3_padyt+o3_padunit+"></TD></TR><TR><TD WIDTH="+o3_padxl+o3_padunit+"></TD><TD VALIGN=TOP WIDTH="+(o3_width-o3_padxl-o3_padxr)+o3_padunit+"><FONT class=\""+o3_textfontclass+"\">"+text+"</FONT></TD><TD WIDTH="+o3_padxr+o3_padunit+"></TD></TR><TR><TD COLSPAN=3 HEIGHT="+o3_padyb+o3_padunit+"></TD></TR></TABLE>";
		if (o3_css == CSSSTYLE) txt = "<TABLE WIDTH="+o3_width+o3_widthunit+" BORDER=0 CELLPADDING=0 CELLSPACING=0 HEIGHT="+o3_height+o3_heightunit+"><TR><TD COLSPAN=3 HEIGHT="+o3_padyt+o3_padunit+"></TD></TR><TR><TD WIDTH="+o3_padxl+o3_padunit+"></TD><TD VALIGN=TOP WIDTH="+(o3_width-o3_padxl-o3_padxr)+o3_padunit+"><FONT style=\"font-family: "+o3_textfont+"; color: "+o3_textcolor+"; font-size: "+o3_textsize+o3_textsizeunit+";\">"+text+"</FONT></TD><TD WIDTH="+o3_padxr+o3_padunit+"></TD></TR><TR><TD COLSPAN=3 HEIGHT="+o3_padyb+o3_padunit+"></TD></TR></TABLE>";
		if (o3_css == CSSOFF) txt = "<TABLE WIDTH="+o3_width+" BORDER=0 CELLPADDING=0 CELLSPACING=0 HEIGHT="+o3_height+"><TR><TD COLSPAN=3 HEIGHT="+o3_padyt+"></TD></TR><TR><TD WIDTH="+o3_padxl+"></TD><TD VALIGN=TOP WIDTH="+(o3_width-o3_padxl-o3_padxr)+"><FONT FACE=\""+o3_textfont+"\" COLOR=\""+o3_textcolor+"\" SIZE=\""+o3_textsize+"\">"+text+"</FONT></TD><TD WIDTH="+o3_padxr+"></TD></TR><TR><TD COLSPAN=3 HEIGHT="+o3_padyb+"></TD></TR></TABLE>";
	}
	set_background(picture);
	return txt;
}

// Loads a picture into the div.
function set_background(pic) {
	if (pic == "") {
		if (ie4) over.backgroundImage = "none";
		if (ns6) over.style.backgroundImage = "none";
	} else {
		if (ns4) {
			over.background.src = pic;
		} else if (ie4) {
			over.backgroundImage = "url("+pic+")";
		} else if (ns6) {
			over.style.backgroundImage = "url("+pic+")";
		}
	}
}



////////////////////////////////////////////////////////////////////////////////////
// HANDLING FUNCTIONS
////////////////////////////////////////////////////////////////////////////////////


// Displays the popup
function disp(statustext) {
	if ( (ns4) || (ie4) || (ns6) ) {
		if (o3_allowmove == 0) 	{
			placeLayer();
			showObject(over);
			o3_allowmove = 1;
		}
	}

	if (statustext != "") {
		self.status = statustext;
	}
}

// Decides where we want the popup.
function placeLayer() {
	var placeX, placeY;
	
	// HORIZONTAL PLACEMENT
	if (o3_fixx > -1) {
		// Fixed position
		placeX = o3_fixx;
	} else {
		winoffset = (ie4) ? o3_frame.document.body.scrollLeft : o3_frame.pageXOffset;
		if (ie4) iwidth = o3_frame.document.body.clientWidth;
		if (ns4) iwidth = o3_frame.innerWidth; // was screwed in mozilla, fixed now?
		if (ns6) iwidth = o3_frame.outerWidth;
		
		// If HAUTO, decide what to use.
		if (o3_hauto == 1) {
			if ( (o3_x - winoffset) > ((eval(iwidth)) / 2)) {
				o3_hpos = LEFT;
			} else {
				o3_hpos = RIGHT;
			}
		}
		
		// From mouse
		if (o3_hpos == CENTER) { // Center
			placeX = o3_x+o3_offsetx-(o3_width/2);
		}
		if (o3_hpos == RIGHT) { // Right
			placeX = o3_x+o3_offsetx;
			if ( (eval(placeX) + eval(o3_width)) > (winoffset + iwidth) ) {
				placeX = iwidth + winoffset - o3_width;
				if (placeX < 0) placeX = 0;
			}
		}
		if (o3_hpos == LEFT) { // Left
			placeX = o3_x-o3_offsetx-o3_width;
			if (placeX < winoffset) placeX = winoffset;
		}
	
		// Snapping!
		if (o3_snapx > 1) {
			var snapping = placeX % o3_snapx;
			if (o3_hpos == LEFT) {
				placeX = placeX - (o3_snapx + snapping);
			} else {
				// CENTER and RIGHT
				placeX = placeX + (o3_snapx - snapping);
			}
			if (placeX < winoffset) placeX = winoffset;
		}
	}

	
	
	// VERTICAL PLACEMENT
	if (o3_fixy > -1) {
		// Fixed position
		placeY = o3_fixy;
	} else {
		scrolloffset = (ie4) ? o3_frame.document.body.scrollTop : o3_frame.pageYOffset;

		// If VAUTO, decide what to use.
		if (o3_vauto == 1) {
			if (ie4) iheight = o3_frame.document.body.clientHeight;
			if (ns4) iheight = o3_frame.innerHeight;
			if (ns6) iheight = o3_frame.outerHeight;

			iheight = (eval(iheight)) / 2;
			if ( (o3_y - scrolloffset) > iheight) {
				o3_vpos = ABOVE;
			} else {
				o3_vpos = BELOW;
			}
		}


		// From mouse
		if (o3_vpos == ABOVE) {
			if (o3_aboveheight == 0) {
				var divref = (ie4) ? o3_frame.document.all['overDiv'] : over;
				o3_aboveheight = (ns4) ? divref.clip.height : divref.offsetHeight;
			}

			placeY = o3_y - (o3_aboveheight + o3_offsety);
			if (placeY < scrolloffset) placeY = scrolloffset;
		} else {
			// BELOW
			placeY = o3_y + o3_offsety;
		}

		// Snapping!
		if (o3_snapy > 1) {
			var snapping = placeY % o3_snapy;
			
			if (o3_aboveheight > 0 && o3_vpos == ABOVE) {
				placeY = placeY - (o3_snapy + snapping);
			} else {
				placeY = placeY + (o3_snapy - snapping);
			}
			
			if (placeY < scrolloffset) placeY = scrolloffset;
		}
	}


	// Actually move the object.	
	repositionTo(over, placeX, placeY);
}


// Moves the layer
function mouseMove(e) {
	if ( (ns4) || (ns6) ) {o3_x=e.pageX; o3_y=e.pageY;}
	if (ie4) {o3_x=event.x; o3_y=event.y;}
	if (ie5) {o3_x=event.x+o3_frame.document.body.scrollLeft; o3_y=event.y+o3_frame.document.body.scrollTop;}
	
	if (o3_allowmove == 1) {
		placeLayer();
	}
}

// The Close onMouseOver function for stickies
function cClick() {
	hideObject(over);
	o3_showingsticky = 0;
	
	return false;
}


// Makes sure target frame has overLIB
function compatibleframe(frameid) {        
	if (ns4) {
		if (typeof frameid.document.overDiv =='undefined') return false;
	} else if (ie4) {
		if (typeof frameid.document.all["overDiv"] =='undefined') return false;
	} else if (ns6) {
		if (frameid.document.getElementById('overDiv') == null) return false;
	}

	return true;
}



////////////////////////////////////////////////////////////////////////////////////
// LAYER FUNCTIONS
////////////////////////////////////////////////////////////////////////////////////


// Writes to a layer
function layerWrite(txt) {
	txt += "\n";
	
        if (ns4) {
                var lyr = o3_frame.document.overDiv.document

                lyr.write(txt)
                lyr.close()
        } else if (ie4) {
		o3_frame.document.all["overDiv"].innerHTML = txt
	} else if (ns6) {
		range = o3_frame.document.createRange();
		range.setStartBefore(over);
		domfrag = range.createContextualFragment(txt);
		while (over.hasChildNodes()) {
			over.removeChild(over.lastChild);
		}
		over.appendChild(domfrag);
	}
}

// Make an object visible
function showObject(obj) {
        if (ns4) obj.visibility = "show";
        else if (ie4) obj.visibility = "visible";
	else if (ns6) obj.style.visibility = "visible";
}

// Hides an object
function hideObject(obj) {
        if (ns4) obj.visibility = "hide";
        else if (ie4) obj.visibility = "hidden";
	else if (ns6) obj.style.visibility = "hidden";
        
	if (o3_timerid > 0) clearTimeout(o3_timerid);
	if (o3_delayid > 0) clearTimeout(o3_delayid);
	o3_timerid = 0;
	o3_delayid = 0;
        self.status = "";
}

// Move a layer
function repositionTo(obj,xL,yL) {
	if ( (ns4) || (ie4) ) {
	        obj.left = xL;
	        obj.top = yL;
	} else if (ns6) {
		obj.style.left = xL + "px";
		obj.style.top = yL+ "px";
	}
}





////////////////////////////////////////////////////////////////////////////////////
// PARSER FUNCTIONS
////////////////////////////////////////////////////////////////////////////////////


// Defines which frame we should point to.
function opt_FRAME(frm) {
        o3_frame = compatibleframe(frm) ? frm : ol_frame;

	if ( (ns4) || (ie4 || (ns6)) ) {
		if (ns4) over = o3_frame.document.overDiv;
		if (ie4) over = o3_frame.overDiv.style;
		if (ns6) over = o3_frame.document.getElementById("overDiv");
	}

	return 0;
}

// Calls an external function
function opt_FUNCTION(callme) {
	o3_text = callme()
	return 0;
}




//end (For internal purposes.)
////////////////////////////////////////////////////////////////////////////////////
// OVERLIB 2 COMPATABILITY FUNCTIONS
// If you aren't upgrading you can remove the below section.
////////////////////////////////////////////////////////////////////////////////////

// Converts old 0=left, 1=right and 2=center into constants.
function vpos_convert(d) {
	if (d == 0) {
		d = LEFT;
	} else {
		if (d == 1) {
			d = RIGHT;
		} else {
			d = CENTER;
		}
	}
	
	return d;
}

// Simple popup
function dts(d,text) {
	o3_hpos = vpos_convert(d);
	overlib(text, o3_hpos, CAPTION, "");
}

// Caption popup
function dtc(d,text, title) {
	o3_hpos = vpos_convert(d);
	overlib(text, CAPTION, title, o3_hpos);
}

// Sticky
function stc(d,text, title) {
	o3_hpos = vpos_convert(d);
	overlib(text, CAPTION, title, o3_hpos, STICKY);
}

// Simple popup right
function drs(text) {
	dts(1,text);
}

// Caption popup right
function drc(text, title) {
	dtc(1,text,title);
}

// Sticky caption right
function src(text,title) {
	stc(1,text,title);
}

// Simple popup left
function dls(text) {
	dts(0,text);
}

// Caption popup left
function dlc(text, title) {
	dtc(0,text,title);
}

// Sticky caption left
function slc(text,title) {
	stc(0,text,title);
}

// Simple popup center
function dcs(text) {
	dts(2,text);
}

// Caption popup center
function dcc(text, title) {
	dtc(2,text,title);
}

// Sticky caption center
function scc(text,title) {
	stc(2,text,title);
}

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