function popUp(url, xjan, yjan) {
		day = new Date();
		id = day.getTime();
		l = (screen.availWidth-10 - xjan) / 2;
		t = (screen.availHeight-20 - yjan) / 2;
	  eval("page" + id + " = window.open(url, \'" + id + "\', \',toolbar=1,scrollbars=1,left='+l+',top='+t+',location=0,statusbar=0,menubar=0,resizable=0,width='+xjan+',height='+yjan+'\');"); 
}

function changevista(tmp_w, tmp_h){
	
	document.getElementById("paineladmin").width = tmp_w;
	document.getElementById("paineladmin").height = tmp_h;
	
}