/*
	file	:	imageScripts.js.asp	
	usage	:	<script language="javascript" src="/includes/imageScripts.js.asp"></script>		
	purpose	:	provides ingenuus image manipulation routines
					ingenuus_swapImage(paramImage,paramSwitch)
						paramImage=name of Image object
						paramSwitch= on or off
					ingenuus_imagesPreLoad(imageSourceList)
						imageSourceList is a comma separated list of image references to preload into a page
	created	:	4/9/2001	SG
*/
	function ingenuus_swapImage(paramImage, paramSwitch){
	  var objStr,obj;
	  /*
	    Usage: ingenuus_swapImage(originalImage, 'newSourceUrl');
	    Requires: ingenuus_imagesPreLoad() (optional, but recommended especially for page with several images to swap)
	    : <a href="#" onMouseOver="ingenuus_swapImage('myImg', 'on.gif');" onMouseOut="ingenuus_swapImage('myImg', 'off.gif');"><img name="myImg" src="off.gif"></a>
	  */
	 var txtSwitch =new String;
	 if (paramSwitch=="on") 
		txtSwitch="n"
	 else
	    txtSwitch="f";
	    
	  if(document.images){
	    if (typeof(paramImage) == 'string') {
		 
	      objStr = 'document.' + paramImage;
	      obj = eval(objStr);
	      //alert(obj.src+' '+ obj.src.length + ' '+ obj.src.substring(0,obj.src.length-5)+txtSwitch +'.gif');
	      //obj.src = paramSrc;
	      obj.src=obj.src.substring(0,obj.src.length-5)+txtSwitch +'.gif';
	    } else if ((typeof(paramImage) == 'object') && paramImage && paramImage.src) {
	      alert(paramImage.src.length());
	      //paramImage.src = paramSrc;
	      paramImage.src=paramImage.src.substring(0,paramImage.src.length-5)+txtSwitch +'.gif';
	    }
	  }
	}
		
function ingenuusSmartSwapImage(paramImage, paramSwitch){
	  var objStr,obj;
	  /*
	    Usage: ingenuus_swapImage(originalImage, 'newSourceUrl');
	    Requires: ingenuus_imagesPreLoad() (optional, but recommended especially for page with several images to swap)
	    : <a href="#" onMouseOver="ingenuus_swapImage('myImg', 'on.gif');" onMouseOut="ingenuus_swapImage('myImg', 'off.gif');"><img name="myImg" src="off.gif"></a>
	  */
	  
	 var txtSwitch =new String;
	 if (paramSwitch=="on") 
		txtSwitch="n"
	 else
	    txtSwitch="f";
	    
	  if(document.images){
	    if (typeof(paramImage) == 'string') {
		  if (paramImage==activeImage){
			//alert('Active');
		  }else{		 
			objStr = 'document.' + paramImage;
			obj = eval(objStr);
			obj.src=obj.src.substring(0,obj.src.length-5)+txtSwitch +'.gif';
	      }
	    } else if ((typeof(paramImage) == 'object') && paramImage && paramImage.src) {
	      alert(paramImage.src.length());
	      //paramImage.src = paramSrc;
	      paramImage.src=paramImage.src.substring(0,paramImage.src.length-5)+txtSwitch +'.gif';
	    }
	  }
	}
		function ingenuus_imagesPreLoad() {
	/*
	Loads images into the browser's cache for later use.
	Usage: ingenuus_imagesPreLoad('image 1 URL', 'image 2 URL', 'image 3 URL', ...);
	*/
	  if (document.images) {
	    if (typeof(document.il) == 'undefined'){
	      document.il = new Object();
	    }
	    document.il.loadedImages = new Array();
	    var argLength = ingenuus_imagesPreLoad.arguments.length;
	    for(arg=0;arg<argLength;arg++) {
	      document.il.loadedImages[arg] = new Image();
	      document.il.loadedImages[arg].src = ingenuus_imagesPreLoad.arguments[arg];
	    }
	  }
	}

	function ingenuusSmartClick(paramImage){
		var objStr,obj;
		var txtSwitch=new String("f");
		var txtSwitchOn=new String("n");
				
		objStr = 'document.' + activeImage;
		if (objStr!='document.'){
			obj = eval(objStr);
			obj.src=obj.src.substring(0,obj.src.length-5)+txtSwitch +'.gif';
		}
		//alert(paramImage.src.length());
	      //paramImage.src = paramSrc;
	      //paramImage.src=paramImage.src.substring(0,paramImage.src.length-5)+txtSwitchOn +'.gif';
		activeImage=paramImage;
	}

	function ingenuusSetActiveImage(paramImage){
		activeImage=paramImage;
	}