function getWindowHeight() {
		if (window.self && self.innerHeight) {
			return self.innerHeight;
		}
		if (document.documentElement && document.documentElement.clientHeight) {
			return document.documentElement.clientHeight;
		}
		return 0;
	}
	function getWindowWidth() {
		if (window.self && self.innerWidth) {
			return self.innerWidth;
		}
		if (document.documentElement && document.documentElement.clientWidth) {
			return document.documentElement.clientWidth;
		}
		return 0;
	}
	function e(id) {
		return document.getElementById(id);
	}
	/* select and deselect all checkboxes */
	function SetChecked(val,chkName, form) {
		dml=document.forms[form];
		len = dml.elements.length;
		var i=0;
		for( i=0 ; i<len ; i++) {
			if (dml.elements[i].name==chkName) {
				dml.elements[i].checked=val;
			}
		}
    }