var winWidth;
	if (navigator.appCodeName == "Mozilla"){
		winWidth = screen.width;
		//alert(winWidth);
	}else{
		winWidth = document.documentElement.clientWidth;	
	}
	
	if (winWidth > 1000){
		setActiveStyleSheet("large");
	}else {
		setActiveStyleSheet("small");
	}
	
	function setActiveStyleSheet(title) {
		var i, a, main;
		for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
	     if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
	       a.disabled = true;
	       if(a.getAttribute("title") == title) a.disabled = false;
	     }
	   }
	}
	function ShowImage(id){
		window.open("/ShowImage.asp?ID="+ id,null,"height=200,width=300,status=no,toolbar=no,menubar=no,location=no,titlebar=no,resizable=no");	
	}
	
	function validateSearch(theForm){
		var returnValue = true;
		var errMessage = "";
			
		if(theForm.query.value == ""){
			//errMessage += "Please enter search term.\n";
			errMessage += "Παρακαλούμε εισάγετε τους όρους αναζήτησης.\n";
			returnValue = false;
		}else if(theForm.query.value.length < 3){
			//errMessage += "Please enter at least 3 characters for a more precise search.\n";
			errMessage += "Παρακαλούμε εισάγετε τουλάχιστον τρεις (3) χαρακτήρες.\n";
			returnValue = false;
		}
			
		if(!returnValue)
			alert(errMessage);
		
		return returnValue;
	}