dropdownjs.js

研究和开发移动道中数字传输技术的第一步工作就是认识移动信道本身的特性

	var dropdownimgSite="http://www.eetchina.com/IMAGES/";
	var browserName=navigator.appName;
	var isIEexplorer=false;
	if (browserName=="Microsoft Internet Explorer") isIEexplorer=true;
	function showlist(dName){
		var o1=document.getElementById("Layer1"+dName);
		o1.style.visibility="visible"; 
	}

	function hideit(dName){
		var o1=document.getElementById("Layer1"+dName);
		o1.style.visibility="hidden"; 
		flashImg2(dName);
	}

	function mOvr(src,clrOver){
		if (!src.contains(event.fromElement)) {
			src.style.color="#FFFFFF";
			src.bgColor = clrOver;
		}
	}
	
	function mOut(src,clrIn)  {
		if (!src.contains(event.toElement)) {
			src.style.cursor = 'default';
			src.style.color="#000000";
			src.bgColor = clrIn;
		}
	}
	
	function getVal(src,dName,InputArray){
		//if (!isIEexplorer) 
		//{
			setSearch();
			return;
		//}
		var ao=document.getElementById('selectVal'+dName);
		var temp = new Array(); 
		temp = InputArray.split(',');
		var keyValue=temp[src].replace('"','');

		var tmpKeyArray=new Array();
		tmpKeyArray = keyValue.split('+');
		
		ao.innerHTML =" "+tmpKeyArray[0];

		if (dName!=null)
		{
			var o=document.getElementById(dName);
			o.value=tmpKeyArray[1];
		}
		setSearch(o.value);
		hideit(dName);
	}

	function flashImg(dName){
		//Please set jpg to /IMAGES/ directory.
		var t=document.getElementById('imgs'+dName);
		t.src=dropdownimgSite+"drop_fg2.jpg";
	}

	function flashImg2(dName){
		//Please set jpg to /IMAGES/ directory.
		var t=document.getElementById('imgs'+dName);
		t.src=dropdownimgSite+"drop_fg.jpg";
	}

	function WriteCustomDropdownList(array_str,dName)
	{
		//Please set jpg to /IMAGES/ directory.
		var InputArray=array_str;
		
		var keyArray = new Array(); 

		keyArray = InputArray[0].split('+');
		/*
		if (!isIEexplorer)
		{
		}else{
			begin_talbe='<table cellspacing="0" border="0" cellpadding="0"><tr ><td  id ="selectVal'+dName+'" background="'+dropdownimgSite+'drop_bg2.jpg" width="39" height="20" onClick="showlist(\''+dName+'\')" style="font-size: 12px;z-index:10"></td><td ><img id="imgs'+dName+'" src="'+dropdownimgSite+'drop_fg.jpg"  onClick="showlist(\''+dName+'\')" onMouseDown="flashImg(\''+dName+'\')"  onMouseup="flashImg2(\''+dName+'\')"/></td></tr></table><div  id="Layer1'+dName+'"  style="position:absolute;width:50px;height:20px;z-index:2;visibility:hidden"  onMouseMove="showlist(\''+dName+'\')"  onMouseOut="hideit(\''+dName+'\');" style="z-index:10"><table border="0" cellpadding="1" cellspacing="0"  bgcolor="#000000"><tr><td ><table width="52" border="0" cellspacing="0" cellpadding="0"  bgcolor="#FFFFFF">';
			end_table='</table></td></tr></table></div><INPUT TYPE="hidden" name="'+dName+'" id="'+dName+'" value="'+keyArray[1]+'">';
		}
		*/
		var array_count=array_str.length; 
		var content_str='';
		for (x=0; x<array_count; x++) 
		{ 
			var tmpArray=array_str[x].split('+');
			//if (!isIEexplorer)
			//{
				content_str=content_str+'<option value="'+tmpArray[1]+'">'+tmpArray[0]+'</option>';
			//}else{//Is ie
			//	content_str=content_str+'<tr onMouseOver="mOvr(this,\''+'#0A246A'+'\');" onMouseOut="mOut(this,\''+'#FFFFFF'+'\');" onClick="getVal('+x+',\''+dName+'\',\''+array_str+'\');"><td><span style="font-size: 12px">'+tmpArray[0]+'</span></td><td>&nbsp;</td></tr>';
			//}
		}
		//if (!isIEexplorer)
		//{
		if (IsHomePage)
		{
			var tmpArray1=array_str[0].split('+');
			return '<INPUT TYPE="hidden" name="'+dName+'" value="'+tmpArray1[1]+'">';
		}else{
			return '<select name="'+dName+'" onchange="javascript:setSearch(this.options[selectedIndex].value);">'+content_str;
		}
		//}else{
		//	return begin_talbe+content_str+end_table;
		//}
	}