String.prototype.trim = function() {
	return this.replace(/^\s+|\s+$/g,"");
}
window.addEvent('domready', function() {
	window.scrollTo(0, 1);

	var term=$('term');
	if(term){
		$('search').addEvent('click',function(e){
			e.stop();
			var validate=$$('.drop');
			var str='';
			for(var x=0; x<validate.length; x++)
				str+=validate[x].value;
			var cn=$('course_num').get('value');
			
			str=str.trim();
			if(str=='' && cn==''){
				var spos=this.getPosition();
				var warning=new Element('div', {
					'html': 'Please refine your search by selecting at least one criteria.',
					'id':'warning',
					'class':'',
					'styles': {
						'position':'absolute',
						'border':'2px solid #000',
						'color':'#f00',
						'padding':'4px',
						'background-color':'#fff',
						'top':spos.y,
						'left':spos.x-20,
						'-moz-border-radius':'10px',
						'-webkit-border-radius':'10px'
					}
				});
				warning.inject(this,'after');
				(function(){
					$('warning').dispose();
				}).delay(3000);
	
	 
	
			}
			else
				window.location=("result.php?"+$('searchDiag').toQueryString());
			
	
		});

	}//endif(term)
});