var section     = ""; 
var pic       = "";


function readURLParameters() {

	// Run this function at the top of each page/frame.
	section  = readFromURL("section");
	pic     = readFromURL("pic");
}

function readFromURL (strParamName, strDefaultValue) {
	
	// Reads the value of the URL parameter specified by strParamName. If not found, returns strDefaultValue.
	if (location.search.indexOf("?") == -1) return strDefaultValue;
	var arrParams = location.search.split("?")[1].split("&");
	if (arrParams) {
		for (i=0; i < arrParams.length; i++) {
			var param = arrParams[i].split("=");
			if (param[0].toLowerCase() == strParamName.toLowerCase()) {
				return param[1];
			}
		}
	}
	return strDefaultValue;
}