function mainSelectAction(selection) {		
	if (document.getElementById(selection).selectedIndex != 0) {		
		var sIndex = document.getElementById(selection).selectedIndex;
		var theString = document.getElementById(selection).options[sIndex];
		/*if (theString.indexOf(".pdf")!=-1 || theString.indexOf(".PDF")!=-1) {	*/	
		
		//check if IE7
		var ie7= !!(window['ActiveXObject'] && window['XMLHttpRequest']);
		if(ie7){
			document.location.href = theString.value; 
		}else{
			if(theString.title=="new_window") {			
				window.open(theString.value);
			} else {
				document.location.href = theString.value;
			}
		}
		document.getElementById(selection).selectedIndex = 0;
	}
}