window.onload=function() {
	SearchInput();  
	};

function SearchInput() {
	var element = document.getElementById('suchbegriff');
	element.onfocus=function() { if(element.value == 'Suchbegriff') { element.value = ''; } else { element.select(); } }
	element.onblur=function() { if(element.value == '') element.value = 'Suchbegriff'; }
	}