function Resize(imgObj,width,height){
	var tempimg=new Image();
	tempimg.src=imgObj.src;
	if(tempimg.width>width){tempimg.height=tempimg.height/tempimg.width*width;tempimg.width=width;}
	if(tempimg.height>height){tempimg.width=tempimg.width/tempimg.height*height;tempimg.height=height;}
	imgObj.width=tempimg.width;
	imgObj.height=tempimg.height;
}

window.onload=function(){
	var Nav=document.getElementById("imgresize");
	var imgs=Nav.getElementsByTagName("img");

for(var i=0;i<imgs.length;i++){
			Resize(imgs[i],300,158);
	}

}