function leftTrim(strValue){
	for (var i=0;(i < strValue.length) && (strValue.charAt(i)==" ");	i++){
	}
	return strValue.substring (i, strValue.length);
}

function rightTrim(strValue){
	for (var i=strValue.length-1;(i >= 0) && (strValue.charAt(i)==" ");	i--){
	}
	return strValue.substring (0, i+1);
}

function Trim(strValue){
	strValue = leftTrim(strValue);
	strValue = rightTrim(strValue);
	return strValue;
}

function SetCookie(sName, sValue){  
	document.cookie = sName + "=" + escape(sValue) + ";"; 
}

function GetCookie(sName){  
	// cookies are separated by semicolons  
	var aCookie = document.cookie.split(";");  
	for (var i=0; i < aCookie.length; i++)  {    
		// a name/value pair (a crumb) is separated by an equal sign    
		var aCrumb = aCookie[i].split("=");    
		if (sName == aCrumb[0])       
			return unescape(aCrumb[1]);  
	}  // a cookie with the requested name does not exist  
	return null;
}

function swapImage(strImageName) {
	document[strImageName].imgRolln=document[strImageName].src;
	document[strImageName].src=document[strImageName].lowsrc;
}

function replaceImage(strImageName) {
	document[strImageName].src=document[strImageName].imgRolln
}