function getElementsByClass(searchClass,node,tag) {
	var classElements = new Array();
	if ( node == null )
		node = document;
	if ( tag == null )
		tag = '*';
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
	for (i = 0, j = 0; i < elsLen; i++) {
		if ( pattern.test(els[i].className) ) {
			classElements[j] = els[i];
			j++;
		}
	}
	return classElements;
}


function product_openExtendedOptionsTab(which) {
	
	//Get the tabs we are wokring with:
	var tabs = getElementsByClass('tab_on',document,'*');
	var tab = document.getElementById('tab_' + which);
	
	//Get the data divs for the tabs:
	var tabs_data = getElementsByClass('optionSet',document,'*');
	var tab_data = document.getElementById('data_' + which);
	
		//close the current tab:
		tabs[0].className = 'tab_off';
		
		//open the new tab:
		tab.className = 'tab_on';

		//hide all data sets:
		for (i = 0; i < tabs_data.length; i++) {
			tabs_data[i].style.display = "none";
		}
		
		//open the new data set:
		tab_data.style.display = "block";
		
	}
	
function product_setLargeImageSrc(val) {

	var img = document.getElementById('productIMG')
	
	img.src = val;
	
	return true;

	}