// popup window function
function popUp(myurl,mywidth,myheight) {

	var LeftPosition = (screen.width) ? (screen.width-mywidth)/2 : 0;
	var TopPosition = (screen.height) ? (screen.height-myheight)/2 : 0;
	
	mywindow = window.open (myurl,"mypopup","location=0,status=1,scrollbars=1,toolbar=0,menubar=0,width=" + mywidth + ",height=" + myheight);
	mywindow.moveTo(LeftPosition,TopPosition);	
	
}

// popup window function with variable
function popUp_withvar(myurl,mywidth,myheight,myuid) {

	var LeftPosition = (screen.width) ? (screen.width-mywidth)/2 : 0;
	var TopPosition = (screen.height) ? (screen.height-myheight)/2 : 0;
	
	myurl = myurl + "?uid=" + myuid
	
	mywindow = window.open (myurl,"mypopup","location=0,status=1,scrollbars=1,toolbar=0,menubar=0,width=" + mywidth + ",height=" + myheight);
	mywindow.moveTo(LeftPosition,TopPosition);	
	
}