var co = 1;

function collapse() {
	var x=document.getElementsByName("collap").length;
	for ( i=0; i<x; i++ ) {
		if ( co > 0 ) {
			document.getElementsByName("collap")[i].style.display = "none";
		} else {
			document.getElementsByName("collap")[i].style.display = "block";
		} 
	}
	co *= -1;
}


function dele() {
	Check = confirm("Dieses Element wirklich löschen?");
	return Check;
}