var imgLeftNav_on = new Image();
	imgLeftNav_on.src = (strWebRoot + "img/global/blue_arrow.gif");

var imgLeftNav_off = new Image();
	imgLeftNav_off.src = (strWebRoot + "img/global/spacer.gif");


function SwapImages(){
	var Args = arguments;
	
	for (var i = 0 ; i < Args.length ; i+=2){
		document.images[ Args[i] ].src = Args[i+1].src;
	}
}


function NavOn(strNav){
	SwapImages("left_nav_" + strNav, imgLeftNav_on);
}


function NavOff(strNav){
	SwapImages("left_nav_" + strNav, imgLeftNav_off);
}


function ValidateSearch(objForm){
	if (objForm.elements["criteria"].value == ""){
		alert("Please enter your search criteria");
		return(false);
	} else {
		return(true);
	}
}