/*--------------------------------------------------
GetValue
Returns the value of a query string variable when given
a variable name.

Example:
http://some.url/?page=1
myValue = GetValue('page');
myValue is now set to 1
----------------------------------------------------*/

function GetValue(varName) {
	squery = location.search;
	idx = squery.indexOf(varName);
	if (idx != -1) {
		squery = squery.substr(idx+1+varName.length, squery.length);
	
		// grab value of varName
		if (squery.length > 0) {
			nextParam = squery.indexOf("&"); // are there multiple values?
			if (nextParam != -1) {
				theValue = squery.substr(0, nextParam);
			} else {
				theValue = squery.substr(0, squery.length);
			}
		}
	} else {
		theValue = "";
	}
	
	return theValue;
}