//Before Using This JS 
//Declare var imageUrl;
function getElement(id){ 
	if(document.getElementById){ 
		// test the most common method first. Most browsers won't get past this test       
		return document.getElementById(id);    
	 } else if(document.all){ 
		 // test older versions of IE       
		 return document.all[id];    
	 }else if(document.layers){ 
		// test older versions of Netscape       
		 return document.layers[id];   
	 }else{ 
		 // not sure what to do...return null       
		return null;    
	}
}
function updateBlock(tabNameArray, blockName, blockContentArray, selectedBlocknum) {
	var tabElement;
	var blockElement;
	for (var i=0; i<tabNameArray.length; i++) {
		tabElement = getElement(tabNameArray[i]);
		tabElement.style.background = "url(" + imageUrl + "/portal/malayalamhome/background01.png)"; 
		tabElement.style.color="#000000";
		/*if (tabElement.style.background.indexOf("background.png")>-1 || (tabElement.style.background.length==0 && i==0)) {
			tabElement.style.background = "url(" + imageUrl + "/portal/malayalamhome/background01.png)"; 
			tabElement.style.color="#000000";
			break;
		}*/
	}
	tabElement = getElement(tabNameArray[selectedBlocknum]);
	tabElement.style.background = "url(" + imageUrl + "/portal/malayalamhome/background.png)"; 
	tabElement.style.color="#FFFFFF";
	blockElement = getElement(blockName);
	blockElement.innerHTML = blockContentArray[selectedBlocknum];
}