dropdown.js

jsp程序开发系统

function update(e, dd, subMenuNum)
{
dd[0][2] = "SO" + subMenuNum; 
dd[0][1] = "OPT" + subMenuNum;

	for (j=1; j < dd.length; j++)
	{
		dd[j][0] = true; // Options every first row in the array true
		
	}

	for (j=1; j < dd[0].length; j++) //loop through first row (getting headings) of array
	{
		for (i=1; i < dd.length; i++) //for each heading
		{
			
		
		
			current = dd[i][j].split("|"); //split the current heading
			value = current[0]; //place values into variable
			choice = current[0];
			if (current.length == 2) choice = current[1]; // split if need arises
			if (value != document[dd[0][0]][dd[0][j]][document[dd[0][0]][dd[0][j]].selectedIndex].value) dd[i][0] = false;
			//document[dd[0][0]][dd[0][j]][document[dd[0][0]][dd[0][j]].selectedIndex].value = what is selected?
		  if(dd[i][0]){
		 var NLayer = "Layer" + subMenuNum;
		    if(dd[i][2]){
			
		  MM_showHideLayers(NLayer,'','show')
		  }else{
		   MM_showHideLayers(NLayer,'','hide')
		  }
		  }
	
		}
		
		if (e == document[dd[0][0]][dd[0][j]])
		{
		
			dropdown(j+1,dd,subMenuNum);
			for (k=j+2; k < dd[0].length; k++)
			{
				document[dd[0][0]][dd[0][k]].length = 0;
				
			}
			break;
		}
	}
}

function dropdown(item,dd, id)
{
	var pre1 = "";
	var j = 1;
	var defaultselect = 0;
	dd[0][2] = "SO" + id;
	dd[0][1] = "OPT" + id;
	
		if(dd[0][0]){
		if(dd[0][item]){
	document[dd[0][0]][dd[0][item]].options.length = 0;
	document[dd[0][0]][dd[0][item]].options[0] = new Option('Select...', '');
	}
}

	for (i=1; i < dd.length; i++)
	{
		if (dd[i][0] || item == 1)
		{
		
		if(dd[i][item]){
			
			current = dd[i][item].split("|");
			}
			
			value = current[0];
			choice = current[0];
//Changes made to set default selection **********************************
			defaultselected=current[2];
//			if (current.length == 2) choice = current[1];
			if (current.length >= 2) choice = current[1];
//					***************************************
			if (value != pre1)
			{
				var op = new Option(choice, value);
				document[dd[0][0]][dd[0][item]].options[j] = op;
//***********************************
				if (defaultselected)
				{
					document[dd[0][0]][dd[0][item]].selectedIndex=j;
				}
//					*******************************************************
				j++;
				pre1 = value;
			}
		}
	}
}


function MM_reloadPage(init) { //reloads the window if Nav4 resized 
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) { 
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }} 
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload(); 
} 
MM_reloadPage(true); 


function MM_findObj(n, d) { //v4.0 
  var p,i,x; if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) { 
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);} 
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n]; 
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document); 
  if(!x && document.getElementById) x=document.getElementById(n); return x; 
} 

function MM_showHideLayers() { //v3.0 
  var i,p,v,obj,args=MM_showHideLayers.arguments; 
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2]; 
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; } 
    obj.visibility=v; } 
} 

function ValidateSelection()
{

	var EmailNo;
	var NLayer = "Layer";
	var ValidateSelect;

	// sort out all Comboboxes
	var arrayOfSelects = document.all.tags("Select");

	// Iterate through all elements on document
	for(i=0;i<arrayOfSelects.length;i++)
	{
		var ObjectName = new String(arrayOfSelects[i].name);
		NLayer="Layer";
		// If Element name starts with "OPT" means it is first combo and validate it
		if (ObjectName.indexOf("OPT") == 0)
		{
			// get Number assigned to Combo
			EmailNo=ObjectName.substring(3);

			//If Nothing is selected in Combo
			//if (document["form"][ObjectName].selectedIndex==0)
			//{
			//	alert("Please select any option for Email [ " + EmailNo + " ]");
			//	return false;
			//}

			//Build respective layer name for combo
			NLayer = NLayer + EmailNo;

			if ((obj=MM_findObj(NLayer))!=null)
			{
				obj=obj.style;

				// If secend combo is visible then validate it
				if (obj.visibility=="visible")
				{
					ValidateSelect = "SO"+EmailNo;
					if (document["form"][ValidateSelect].selectedIndex==0)
					{
						alert("Please select any option for Email [ " + EmailNo + " ]");
						return false;
					}

				}
			}

		}

	}
	return true;
}